Escape velocity is the speed at which an object:
a) Can leave the surface of a planet without propulsion
b) Needs to travel to stay in orbit
c) Can travel to reach the speed of light
d) Can break free from the gravitational pull of a black hole
Escape velocity depends on which of the following?
a) Only the object’s mass
b) The planet’s mass and radius
c) The object’s speed and height
d) Only the object’s speed
Escape velocity is greater on a planet with:
a) A larger mass and smaller radius
b) A smaller mass and smaller radius
c) A larger mass and larger radius
d) A smaller mass and larger radius
The escape velocity from Earth is approximately:
a) 5 km/s
b) 11.2 km/s
c) 8.9 km/s
d) 25 km/s
What happens to escape velocity as the radius of a planet increases?
a) It decreases
b) It increases
c) It remains constant
d) It becomes zero
Escape velocity is:
a) The minimum speed needed for an object to escape a planet’s gravitational pull
b) The speed at which an object reaches orbit
c) The speed required to fall towards the center of a planet
d) The speed at which an object can be sent to another planet
If an object reaches escape velocity, what happens to its speed over time?
a) It will continue to increase without bound
b) It will remain constant
c) It will decrease due to the planet’s gravity
d) It will oscillate around a fixed speed
The escape velocity from a planet with twice the mass of Earth and half the radius will be:
a) Half of Earth’s escape velocity
b) The same as Earth’s escape velocity
c) Twice Earth’s escape velocity
d) Four times Earth’s escape velocity
If an object does not reach escape velocity, it:
a) Will continue orbiting the planet
b) Will fall back to the planet’s surface
c) Will drift into space
d) Will break apart due to gravity
Which of the following objects would have the highest escape velocity?
a) A small planet with a low mass
b) A large planet with a high mass
c) A moon with a smaller radius
d) A star with low gravity
Escape velocity is zero at:
a) The surface of a planet
b) The center of a planet
c) The event horizon of a black hole
d) Infinity from the planet
Escape velocity is the same for all objects launched from the same height regardless of:
a) The object’s mass
b) The object’s shape
c) The object’s speed
d) The object’s temperature
If the escape velocity is exceeded, the object:
a) Will escape the planet’s gravitational field
b) Will stay in orbit
c) Will fall back to the planet
d) Will explode
The escape velocity formula includes which of the following variables?
a) The object’s speed
b) The planet’s surface gravity
c) The radius and mass of the planet
d) The planet’s magnetic field
Escape velocity for a planet is inversely proportional to:
a) The planet’s radius
b) The planet’s mass
c) The square root of the planet’s density
d) The planet’s temperature
At which of the following locations would the escape velocity be highest?
a) At the top of Earth’s atmosphere
b) On the surface of a neutron star
c) On the surface of the Moon
d) At the top of Mount Everest
Escape velocity from the Moon is:
a) Half of Earth’s escape velocity
b) The same as Earth’s escape velocity
c) One-sixth of Earth’s escape velocity
d) Zero
If escape velocity exceeds the speed of light, the object will:
a) Be impossible to escape
b) Become a black hole
c) Travel faster than light
d) Break the laws of physics
The escape velocity from a planet with the same mass as Earth but twice its radius will be:
a) Half of Earth’s escape velocity
b) Twice Earth’s escape velocity
c) The same as Earth’s escape velocity
d) Four times Earth’s escape velocity
Escape velocity can be calculated by the formula:
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Escape velocity is independent of:
a) The mass of the object
b) The radius of the planet
c) The gravitational constant
d) The speed of light
If an object is launched from the surface of a planet and reaches exactly the escape velocity, it:
a) Will continue at a constant speed
b) Will stop at a certain distance and fall back
c) Will move indefinitely outward
d) Will immediately return to the planet
Escape velocity is required to:
a) Reach a stable orbit
b) Break free from a planet’s gravitational field
c) Travel faster than light
d) Leave the atmosphere of a planet
The escape velocity at the Earth’s surface is the same as the velocity required for:
a) Satellites to stay in orbit
b) An object to reach the Moon
c) A spacecraft to leave Earth without propulsion
d) A rocket to maintain a steady altitude
Escape velocity can be influenced by which of the following?
a) The atmosphere’s composition
b) The height above the surface from which the object is launched
c) The object’s size
d) The planet’s rotation speed
Escape velocity from Earth would be greater than that from the Moon because:
a) Earth has a greater radius
b) Earth has a higher density
c) Earth has more mass
d) Earth is farther from the Sun
The escape velocity from the Sun’s surface is about:
a) 100 km/s
b) 5 km/s
c) 617 km/s
d) 1500 km/s
The escape velocity is often used in which field of study?
a) Quantum mechanics
b) Astrophysics and space exploration
c) Geology
d) Meteorology
To escape a planet’s gravity, a spacecraft must overcome:
a) The planet’s surface speed
b) The gravitational attraction of the planet
c) The atmosphere’s density
d) The planet’s magnetic field
Escape velocity is determined by the formula that includes the:
a) Planet’s density and volume
b) Planet’s surface gravity and radius
c) Object’s speed and size
d) Object’s mass and height above the planet
